Quenching apparatus



Aug. 8, 1944.

H. E. $0M E S QUENCHING APPARATUS Original Filed May 10, 1941 4Sheets-Sheet l X HUM INVENTOR Howard E. Somes ATTORNEY Aug. 8, 1944. H.E. SOMES QUENCHING APPARATUS Original Filed May 10, 1941 4 Sheets-Sheet2 ncrz INVENTOR HCward E- BY W ATTORNEY I Aug. 8, 1944.

H. E. soMEs QUENCHING APPARATUS Original Filed May 10, 1941 4Sheets-Sheet 4 w!" I I" m "1'' u I T. :2 8- a 'INVENYIV'OR ATTQRNEY Ithro gh ing head with quenching fluid. a

Patented Aug. 8, 1944 umran s'rA'rss PATENT OFFICE QUENCIHNGAPPARATUSIIrnomlmnemfim,mh

Budd Induction Heating, Pan a corporation 0! lnc lliiladeiphia,

application May 10., 1941,- Serial No.

this application May 25;

5 Claims. (Ci. zcc-ei This application is a division of my copendingapplication Serial No. 392,867, ior Heat treating apparatus.

The present invention relates to quenching apfiled May 10, 1941,

paratus, more particularly to quenching apparatus suitable for use inheat treating apparatus o! the character having an electromagneticinduction heating head wherein a quenching head is to provide a heattreating apparatus with a;

quenching apparatus which is axially movable into operative relationwith respect to a heating head and is provided with improved means 'ioractuating the same and supp ying the same with quenching fluid.

Another object is to provide a quenching mech-' anism in associationwith a surrounding work feeding mechanism in which improved means isprovided for the drainage oi quenching fluid.

With the above and other objects in view the present invention consistsin certain features of constructionand combinations of parts to be portthe conducting arbor II for the induction heating head is (see Fig. 2).

Slidahly mounted on the rods II and I2 is a carriage ll (shown in Figure1 in its uppermost position) which is provided with a lower connectin:member 20, an intermediate connecting member 2| and anupper connectingmember 22. The lower connecting member II supports a lower rotatablework holding nature 23 which is retated by a motor 24 secured to themember 20. The intermediate connecting member 2| supports an upperrotatable work holding fixture 25 which is reciprocably supportedthereon and adapted to be rotated by a motor ll.

The lower portion of the frame II is provided w'ithabracket I!betweenthe siderods II and II, which bracket supports the'quenchingmechanism 28.

ftei'en'ingtoi 'igureflitwiilbeseenthatrods II and I! are eachcomposedof two'parts connected together by anenlarged piston 29 and that thecarriage ll embodies elongated sleeves.

"to whichthe crossmembers II and II are rigidly connected and whichsurround the rods.

ll andpistons lltheendsoithesleevesbeins provided with packedfluid-tight heads 3| surrounding the rods II and ior slidingengagehereinafter described with reference to the acdrawings and thenclaimed. a

In the drawings which illustrate a suitabl I embodiment oi theinvention,

ei 'igure2isaverflcalsectlonoi'theapp ra I oi Figure 1 showing operativeparts in de-v andiaretransversesectionstaken" tail:

s v a 3-3. and H respectivelyvoi l 'ig- Figure 5 is an enlargedlongitudinal-section the heating and quenching heads; and1"igure8isschematieviewotfl1ehydraulic and the systemior supplying thequench! which like numerals refer to'like parts throngh;

out the several views, the heat treating ap aratus having a pairoispacedvertically extending rods 1 ii and I2 secured at their endsthereto through upper clamping members I8 and lower clamping 1 membersll. The rods extend through th u .v p r ci p l members I: and areconnected toasuitablesourceoi'fluidsupply. Therodsand' sleeves iustdescribed provide. fluid motors for actuating the carriage upwardly anddownwardb'.

The lower cross 2. which connectsthe sleeves or cylinders II is dricalvertically 1 ded with a cyline:;: through the. medium of an -irictionrotatabiy supports an annular sleeve '38 which'hasagearflsecurediothelowerendthereofr The gear I. ismeshed withapinion ll (Figure 4) driven'bythe motor II. 1

The iowerchuck flxture "is secured io'the sleeve 38 for" rotationtherewith and includes an annular-bowl orsplash guard ll whichsupports"an annular chuck l2 coaxial with the sleeve 8. 1 the chuck beingarranged toyieldably ip he lower end 01 a cylindrical, hollow w rkpie e,such.

as the-cylinder 0 shown 2. The chuck pply conduit .34 and bearings I'll42 forms the subject matter oi my copending application Serial No.336,130, flied May 20, 1940.

The upper chuck fixtur 25 embodies an annular member 44 which rotatablysupports an annular sleeve 45 through the medium of antifrictionbearings 46. The sleeve 45 supports the annular upper chuck 41 which isthe same character as the lower chuck 42 and which is arranged toresiliently grip the upper end of the workpiece or cylinder 43. Thesleeve 4 is provided with a gear 48 arranged to be driven by a pinionfrom the motor 28 which is mounted on the annular member 44. Alsosecured to the annular member 46 is an annular splash guard 48 whichsurrounds the up r chuck 41.

The upper chuck fixture is reciprocably supported through the medium ofupright rods 50 having pistons ii at their upper ends, which pistons arearranged within cylinders 52 provided in the upper cross member 2 i Thecross member 2| is provided with upper and lower fluid passages 53 and54, respectively, leading to the opposite ends of the cylinders atopposite sides of the pistons i and connected with a suitable source offluid pressure. It is seen that by admitting fluid under pressurethrough the passages 54 the pistons II will raise the upper chuckfixture and similarly by admitting fluid through the upper passages 53,the pistons will move the chuck flxture 25 downwardly into the workpieceengaging position shown in Figure 2.

It is to be noted that the annular chucks l2 and I! are coaxial withtheheating head I! and arbor l1 so that when the carriage is moved upwardlyto the position shown in Figure 2 the head will be surrounded by theworkpiece 43.

The quenching apparatus embodies a tubular rod ll having the quenchinghead 58 mounted thereon at the upper end. The quenching head is shown inFigure 2 as being coaxial with and in abutting engagement with theinducing head ll. Since in order to place the workpiecein position inthe chucks, the heating and quenching heads must be separable from oneanother, provision is made for elevating the quenching head I! into theposition shown in Figure 2 and retracting it to a lower position. itbeing understood that in Figure 2 the carriage II is in its uppermostposition ready for the start oi the heating and quenching operation andthat in the loading and unloading position the carriage is lowered to apoint where the upper chuck l1 isbelow the bottom of the heating headII. In order to raise and lower the rod 5! a cylinder I! having upperand lower heads I and I9 is supported from the bracket 21 by the upperhead 58.

The cylinder 51 is threaded into the upper head N and telescopes with asleeve or skirt extension ll thereof. The quench rod 55 extends throughthe upper head 58 in sealed sliding engagement therewith and suitablyconnected with the piston I reciprocably mounted within the cylinder 51,the piston having closed-end passage 82 therein forming an'extension ofthe passage 8! through the quench rod 55. The upper head 58 is providedwith a port 84 having a fluid conduit 65 and the lower head 59 isprovided with a port 66 provided with a fluid conduit. The admission offluid to either one or the other of these conduits will move the pistonGI and quench rod 55 upwardly or downwardly, as the case may be.

- In order to provide for the supply of quenching I fluid to thequenching head 55, the piston 6| is so constructed and arranged as toact as a slide valve vated position shown in Figure 2 may be suppliedwith quenching fluid through passage I! of rod 55. The piston H isprovided with a central circumierential groove 68 adapted to cooperatewith a series of ports 69 in the wall 01 and at the upper end oi thecylinder 51, the ports connecting with an internal annular passage 10 inthe skirt I of the upper head ll so as to provide a passage to thecircumferential groove II in the piston Ii from a supply conduit llconnecting with groove or passage 10. The central groove II is connectedwith the passage 82 in piston ll through radial ports 12. The piston 6|thus when it reaches its upper position uncovers the ports I for thesupply of quenching fluid to the quenching head It only permitting suchsupply when the quenching head is in its elevated position.

- In order to provide for the drainage of quenching fluid suppliedwithin the workpiece 4! from the quenching head bl, the rotatable sleevell of the lower chuck flxture is considerably larger in diameter thanthe quench rod 55 to provide an adequate drain passage 11 to a chamber14 provided by an upwardly extending annular wall 15 formed in theannular motor support I! which is secured to the cross member II, thewall ll telescoping with the sleeve IS in sealed running engagementtherewith. Secured to the member 18 in surrounding sealed slidingengagement with the quench rod BI is an annular member 11 having achamber ll therein to which a discharge conduit 19 is connected.Quenching fluid thus flows from the workpiece through passage II andchambers 14 and I! into the discharge conduit II.

A port III is provided in the splash guard ll and arranged to be closedby a ball valve ll positioned in a radial portion of the port so thatduring rotation oi the flxture 23 the ball valve ll through centrifugalforce maintains the port ll closed to to the end that the quench headwhen in its ele- 16 prevent discharging quenching fluid in passage Iifrom gaining access to the-chamber within the splash guard, and whenrotation of the fixture has ceased-to permit any quenching fluid whichhas accumulated within the sp ash guard I through leakage between thechuck it and the workpiece II to drain into drain passage ll throughport 00 past the ball valve ll,

Referring to Figure 5, the quenching hewd ll comprises a nozzle assemblycomposed of annular nozzle members 82 and u, the nozzle member I! beingthreaded on member I! and jammed against a shoulder 04 of the latter.Variation in the width of the annular nozzle orifice ll may be had byintroducin shims between the shoulder 84 and member II. This nozzleassembly is threaded upon the enlarged upper end I! 0! the quench rod IIwhich end ll is provided with a circumferential groove 81 communicatingthrough passage as with the longitudinal passage ll of the quench rodl5, and through radial ports ll formed in the nomle member 84 with theannular space 0| between members I! and II which leads to the orificeIt.

The head end I! ot'the quench rod is also provided with a passage IIwhich receives cooling fluid through a port 82 in the end of the heatinghead II. The port 92 receives fluid which has cooled the hollow heatingcoil II of the heating head and discharged into the heating heat l whichcooperates with the projecting annular valve ring ll of the heating headto center the two heads and prevent cooling fluid from dischargingradially between the heads when the valve SI is raised and the heads arein cooperative engagement with each other.

Referring to the schematic layout oi Figure 6,,

the quenching fluid, suchas water. is taken from a water line 99 aiterpassing through a fllter I and thence through conduit III vfrom whichits pressure is increased by a booster pump I02 and then suppliedthrough the conduit II to .the

oi quench'water from line 09 and under the water main pressure isconducted through the-conduit 'quench rod I! and head 58. The samesupply I to the cylinder head 58 for lowering the quenching head throughthe pressure exerted thereby on the piston ll upon the release ofelevating pressure against the opposite side of the piston ii, asuitable valve I" being included in conduit 85 for controlling th supplyoi water under pressure to cylinder head 58.

The quench rod ll is elevated preferably by air under pressure from asuitable source which flows through line I03 first through a filter I"to the conduit 81 which leads to the cylinder head I,

heads are widely separated to permit the workpiece to be heat treated tobe inserted in the lower chuck 42. After the workpiece is so positioned,fluid is admitted under pressure through passages 53 to lower the upperchuck fixture 25 for engagement of the upper chuck 41 with the upper endof the workpiece to thus properly hold the workpiece in coaxialalignment with the quenching and heating heads. The valve I then isactuated to admit air under pressure through conduit 61 to the cylinderI1 whereby the quench head It is ,elevated into engagement,

with the heating head II, which position is shown in Flgure 2.Thereafter the carriage Isis elevated first to its uppermost position(Figure 2).

When the carriage reaches this uppermost position heating energy issupplied to the heating head, the booster pump "I2 is started inoperation to supply quenching fluid under pressure to thequenching head86 and the motors 24 and 28 are started to rotate the upper and lowerchucks and consequently the workpiece carried thereby.

With the apparatus thus operating, the carriage I! is thus starteddownwardly at a unii'orm rate of movement relative to the heating andquench- .ing heads, during which movement the internal surface of theworkpiece is progressively heated to hardening temperature andquenched.-

As soon as the upper end of the workpiece passes the heating head ll theheating energy is terminated and the booster pump I02 is stopped to shutoil! the supply of quenching fluid, alsomotors 24 and 28 are stopped.Thereafter the carriage moves to its lowermost position, whereture 26whereby the head It. Fluid under pressure is then through as I4 to raisethe upper chuck flx- The splash guard arrangement is claimed'in mydivisional application Serial No. 507,817, flied October 27-. 1943.

It is to be understood. of course, that various 1 automaticcontrolmechanisms, such as that described in my copending application SerialNo. 392,867, aioresaidmay be employed.

Various changes, obvious to those skilled in the art, may be made in thedetailed construction,

and arrangement of parts without departing from the spirit of theinvention, the scope of which is defined by the appended claims.

What is claimed is: a

1. In a quenching device; a reciprocable quenching head provided with atubular quench supply rod, a fluid pressure cylinder having areciprocablepiston therein, said rod extending through one end of saidcylinder and being connected to said piston, said piston being movablefrom the other end of said cylinder to said one cylinder end and havinga ort in its side communicating with the interior of said rodior'conducting quenching fluid thereto, said cylinderv having a fluidpressure connection at said one end for moving said piston toward saidother end and having a port therethrough tor regis-.

tration with said piston port when said piston is at said one end, and acommon fluid supply means for said connection and cylinder port.

2. In aquenching device, a reciprocable quenching head provided with atubular quench supply rod, a, fluid pressure cylinder having areciprocable piston therein, said rod extending through one end of saidcylinder and being connected to said piston, said piston being movablefrom the other end of said cylinder to said one cylinder end and havinga port in its side communicating'with the interior of said rod forconducting quenching fluid thereto, said cylinder having a fluidpressure connection at said one end for moving said piston toward saidother end and having a port'therethrough for registration with saidpiston port when said piston is at said one end, a common fluid supplymeans for said connection and cylinder port, and a fluid pressure pumpassociated-with said supply meansior increasing the pressure of fluidsupplied to said cylinder port only.

Y said other cylinder end toward said one cylinder I cylinder end andhaving a port in its side communicating with the interior of said rodfor conducting quenching fluid thereto, said cylinder having a fluidpressure connection at said one end for moving said piston toward'saidother end and having a port therethrough for registration with saidpiston port when said piston is at said one end, a common fluid supplymeans for said connection andcylinder-port, and a different fluidpressure source connected to said other cylinder end for moving saidpiston from end. i

,(4. In a quenching device having a tubularquenching fluid conductingrod, a fluid pressur V heat treatedworkpiece can be removed.

cyiinder and a piston movable Irom one end of the cylinder to the otherto move said rod from a retracted to an extended position. a fluidpressure supply means for introducing fluid under pressure into saidcylinder at said one end for eflfecting said extending movement, saidpiston having a port communicating with the interior of said rod andnormally closed through contact with the wall of said cylinder, and aquenching fluid connection through said cylinder and disposed tocommunicate with said port only in the extended position of said rod forsupplying quenching fluid to said rod, said quenching fluid connectionbeing connected with a source oi quenching fluid under pressure.

5. In a quenching device having a tubular quenching fluid conductingrod, a fluid pressure cylinder and a piston movable from one end of thecylinder to the other to move said rod from a retracted to an extendedposition, a fluid presassures sure supply means for introducing fluidunder pressure into said cylinder at said one end for effecting saidextending movement. said piston having a portcommunicating with theinterior 0! said rod, said port being normally closed by the wall ofsaid cylinder, and a quenching fluid connection through said cylinderand disposed to communicate with said port only in the extended positionof said rod for supplying quenching fluid to said rod, said quenchingfluid connection being connected with a source of quenching fluid underpressure, said cylinder also having a fluid pressure connection betweensaid piston and said other cylinder end and connected with saidquenching fluid source for utilizing the pressure of quenching fluidfrom said last named source to move said piston toward said one cylinderend to retract said rod.

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